Introduction to types of electric furnaces

Plasma furnace
An electric furnace that uses the plasma generated when the working gas is ionized to heat or melt. The device that generates plasma, commonly known as a plasma gun, includes two types: arc plasma gun and high-frequency induction plasma gun. "The working gas is introduced into a plasma gun with a device that generates an electric arc or high-frequency (5-20 MHz) electric field. The working gas is ionized by the action to generate a plasma composed of electrons, positive ions, and a mixture of gas atoms and molecules.". After the plasma is ejected from the nozzle of the plasma gun, a high-speed and high-temperature plasma arc flame is formed, and the temperature is much higher than that of the ordinary arc. The most commonly used working gas is argon, which is a monoatomic gas that is easy to ionize, and is an inert gas that can protect materials. The working temperature can be as high as 20000 □; Used for smelting special steels, titanium and titanium alloys, superconducting materials, etc. The furnace types include a water cooled copper crystallizer furnace, a hollow cathode furnace, a plasma furnace equipped with induction heating, and a plasma furnace with refractory lining.